Siphon



Feb. 3, 1925.

R. F. M CRACKAN SIPHON Filed July '7. 1924 dripping, and in which the Patented Feb. 3, 1925.

RoBnRT'F. i/recneoken, or'aiciinco'nnj' VIRGINIA] SIPHON.

Application filed July 7, 1924. Serial No. 724,650.

To mZZ'w/wm it may concern:

Be it known that I, Bonner F. MCCRAGK- AN, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Siphons, of which the following isa specification.

This invention relates to an improved siphon which is especially but not necessarily, adapted for use more particularly in chemical laboratories.

In carrying out this invention I have evolved and produced a type of siphon which is self-starting, flow controlling, nontube or conduit is continuously open.

In chemical laboratories, and places where siphons are commonly used, it is the practice, so far .as I know, to use pinch cocks, and other ineffective means for stopping the flow of fluid through the tube. In both instances, these pinch stop cocks are rather weak after a little use, and they permit leakage and, of course, wear out the rubber tubes prematurely.

It is, therefore, my purpose, as before stated, to provide a siphon which will obviate the necessit 7 of em 10 in valves this result beingaccomplished by employing a conduit including a flexible portion which is of a-le ngth' to permit the discharge end thereof to be readily disposed above and below the liquid level in the container, so that the flow of fluid may be readily started or cut off according to the elevation of the discharge end of this flexible portion.

Itv is also a feature of the invention, in providing a structure which is highly adaptable for connecting the discharge end of the conduit with the neck of a bottle, so that the conduit may be suspended in an out-of-the-way position ready for immediate use.

Numerous other features and advantages of the invention will become apparent from the following description and drawings:

In the accompanying drawing, forming a part of this application and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is an elevation, with parts broken away and shown in section, of the improved siphon in association with a liquid containing bottle.

Figure 2 is a View showing a slightly different embodiment of the invention.

Referring now to the drawing, it wilhbe seen that the letter l3 represents a bottle'iof the type frequently seen in laboratories and the like, the same being ad'aptedto contain distilled water, chemical fluids and the like, to be siphoned therefrom into anotliericon tainer. The neckofthe bottle is' closed'ibyi tube is of the usual design. ;Connected to,

the discharge. end thereoffisfa. section of rubber tubing R, which, we will;:assu"me,-' ex tends under ordinary circumstances, to about the point A. The tubing R and the tube T form the common and Well known siphon and these constitute no part of the present invention. 7

The invention comprises anextra length of rubber tubing 1, extending; from the point A. to any-desired point. TlllS:18Xt1L tubing 1, of necessity, must,- be flexible, and, as stated, it is preferably ofrubber. A short rigid tube 2' ofany,appropriatede sign, is connected to the free'end-ofthetubv ing 1, and although it is :not essential in all instances, this tube is equipped, at its" free extremity, with cork member 8. The stopper 3 is adapted to be sniu'gly received in the cup 4- on the uppernend of the tube 5 extending through an opening in the aforesaid stopper S.

Before considering the method of use the device, I wish to direct attention to Figure 2, wherein a slightly different embodiment of the invention is shown. It Wlll be observed that in Figure 1, a comparatively small cork stopper is used, and in this form it is essential to provide the cup 4 for the reception of the stopper 3 on the tube 2.

This is not essential in all instances, however, for, where a large stopper D is used, the stopper itself may be formed with a tapered opening C for reception of the stopper 3 carried by the tube 2. Otherwise, this view shows nothing different from that already considered.

It has been before stated, that the primary feature of-the invention is based upon the fact that the improved siphon is selfstarted. 'Obviously, this is a decided advantage, in that it obviates the necessity of sucking upon the tube, or in other ways fluid. Assuming that the bottle B is filled creating suction to start the flow of the with water to the level indicated, and that the siphon conduit is filled with water up to the level of the bottle, it will be seen that by lowering the discharge end of the tube 2, below the liquid level in the bottle, the liquid will begin to discharge through the conduit immediately. thus enabling any supplemental receptace to be filled with the water from the main receptacle or bottle. As soon as this discharge end is raised above the liquid level, the flow will stop. So long as the free end of the conduit is suspended into position above the liquid level, the use of valves and pinch stopcocks is unnecessary. From the illustration it will be obvious that the means shown for suspending the tube is quitelnovel, in that the stopper 3 can be seated in the cup at and the tube suspended in a position for convenient use. At this time, dust and extraneous particles are prevented from entering and contamii'iating the fluid in the bottle.

Before closing, I would state that in practice the conduit may be considerably long so that the discharge end thereof may be carried to a point considerably below the liquid level in the bottle. This is essential to start the initial flow of fluid into the siphon conduit. For instance, when it has been transferred from one bottle to another and it is desired to produce the self starting action. Of course, if the self starting feature is not desirable, the tube may be shorter in length and the old method of starting may be utilized.

It is thought that the foregoing descrip tion in connection with the drawings will s'uflice to enable a clear understanding of the invention to be had. For this reason, I. do not believe that it is necessary to go more into detail.

lVhile I have shown and described the preferred embodiments of the invention, it is to be understood that minor changes coming within the scope of the adjoined claims may be resorted to, if desired.

1 claim:

1. A device of the class described comprising a liquid containing bottle, a liquid elevating tube, a stopper fitted into the neck of the bottle, said tube having a portion extending downwardly through an opening formed in said stopper and into the interior of the bottle, the upper end of said tube disposed above said stopper, a relatively long section of flexible tubing connected to said elevating tube and adapted to extend down one side of the bottle, and to be looped beneath the bottom of the bottle and extended upwardly along the opposite side. a stopper carried by the free end of said tubing, a second tube extending through the stopper in the neck of the bottle the last named tube being provided on its upper end with a cup. the stopper on the free end of the tubing being receivable in said cup.

2. A device of the class described comprising a liquid containing bottle, a liquid elevating tube, a stopper fitted into the neck of the bottle, said tube having aportion extending downwardly through an opening in said stopper and into the interior of the bottle, the upper end of the tube being disposed above said stopper, a relatively long section of flexible tubing connected to said elevating tube and adapted to extend down one side of the bottle and to be looped beneath the bottom of the bottle and extended upwardly along the opposite side, a plug carried by the free end of said flexible tubing,the aforesaid stopper being equipped with a socket shaped to snugly receive said plug.

In testimony whereof I aflix my signature.

ROBERT F. McCRACK-AN. 

